如何创建本地通知？
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【中文标题】如何创建本地通知？【英文标题】：How to create local notifications? 【发布时间】：2011-05-18 15:20:43 【问题描述】：如何设置本地通知，以便在我设置的时间，我的应用生成带有自定义消息的通知/警报？
【问题讨论】：
【参考方案1】：这是适用于我的项目的 LocalNotification 示例代码。
目标-C：
AppDelegate 文件中的此代码块：
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
[launchOptions valueForKey:UIApplicationLaunchOptionsLocalNotificationKey];
// Override point for customization after application launch.
return YES;
// This code block is invoked when application is in foreground (active-mode)
-(void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
UIAlertView *notificationAlert = [[UIAlertView alloc] initWithTitle:@"Notification" message:@"This local notification"
delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil];
[notificationAlert show];
// NSLog(@"didReceiveLocalNotification");
任何ViewController的.m文件中的此代码块：
-(IBAction)startLocalNotification // Bind this method to UIButton action
NSLog(@"startLocalNotification");
UILocalNotification *notification = [[UILocalNotification alloc] init];
notification.fireDate = [NSDate dateWithTimeIntervalSinceNow:7];
notification.alertBody = @"This is local notification!";
notification.timeZone = [NSTimeZone defaultTimeZone];
notification.soundName = UILocalNotificationDefaultSoundName;
notification.applicationIconBadgeNumber = 10;
[[UIApplication sharedApplication] scheduleLocalNotification:notification];
当按下绑定startLocalNotification 的按钮时，上面的代码会在7 秒的时间间隔后显示一个AlertView 如果应用程序在后台，那么它会将BadgeNumber 显示为10，并带有默认通知声音。
此代码适用于 ios 7.x 及以下版本，但对于 iOS 8，它将在控制台上提示以下错误：
尝试安排带有警报的本地通知，但尚未获得用户显示警报的权限
这意味着您需要注册本地通知。这可以通过以下方式实现：
if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)])
[application registerUserNotificationSettings [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
您也可以参考blog 获取本地通知。
斯威夫特：
您的AppDelegate.swift 文件应如下所示：
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool
// Override point for customization after application launch.
application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes: UIUserNotificationType.Sound | UIUserNotificationType.Badge | UIUserNotificationType.Alert, categories: nil))
return true
您要在其中创建本地通知的 swift 文件（例如 ViewController.swift）应包含以下代码：
//MARK: - Button functions
func buttonIsPressed(sender: UIButton)
println("buttonIsPressed function called \(UIButton.description())")
var localNotification = UILocalNotification()
localNotification.fireDate = NSDate(timeIntervalSinceNow: 3)
localNotification.alertBody = "This is local notification from Swift 2.0"
localNotification.timeZone = NSTimeZone.localTimeZone()
localNotification.repeatInterval = NSCalendarUnit.CalendarUnitMinute
localNotification.userInfo = ["Important":"Data"];
localNotification.soundName = UILocalNotificationDefaultSoundName
localNotification.applicationIconBadgeNumber = 5
localNotification.category = "Message"
UIApplication.sharedApplication().scheduleLocalNotification(localNotification)
//MARK: - viewDidLoad
class ViewController: UIViewController
var objButton : UIButton!
. . .
override func viewDidLoad()
super.viewDidLoad()
. . .
objButton = UIButton.buttonWithType(.Custom) as? UIButton
objButton.frame = CGRectMake(30, 100, 150, 40)
objButton.setTitle("Click Me", forState: .Normal)
objButton.setTitle("Button pressed", forState: .Highlighted)
objButton.addTarget(self, action: "buttonIsPressed:", forControlEvents: .TouchDown)
. . .
. . .
您在 iOS 9 及更低版本中使用本地通知的方式在 iOS 10 中完全不同。
来自 Apple 发行说明的屏幕截图描述了这一点。
您可以参考apple reference document 获取 UserNotification。
以下是本地通知的代码：
目标-C：
在App-delegate.h文件中使用@import UserNotifications;
App-delegate 应符合UNUserNotificationCenterDelegate 协议
在didFinishLaunchingOptions 中使用以下代码：
UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
[center requestAuthorizationWithOptions:(UNAuthorizationOptionBadge | UNAuthorizationOptionSound | UNAuthorizationOptionAlert)
completionHandler:^(BOOL granted, NSError * _Nullable error)
if (!error)
NSLog(@"request authorization succeeded!");
[self showAlert];
];
-(void)showAlert
UIAlertController *objAlertController = [UIAlertController alertControllerWithTitle:@"Alert" message:@"show an alert!" preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"OK"
style:UIAlertActionStyleCancel handler:^(UIAlertAction *action)
NSLog(@"Ok clicked!");
];
[objAlertController addAction:cancelAction];
[[[[[UIApplication sharedApplication] windows] objectAtIndex:0] rootViewController] presentViewController:objAlertController animated:YES completion:^
];
现在在任何视图控制器中创建一个按钮，并在 IBAction 中使用以下代码：
UNMutableNotificationContent *objNotificationContent = [[UNMutableNotificationContent alloc] init];
objNotificationContent.title = [NSString localizedUserNotificationStringForKey:@“Notification!” arguments:nil];
objNotificationContent.body = [NSString localizedUserNotificationStringForKey:@“This is local notification message!“arguments:nil];
objNotificationContent.sound = [UNNotificationSound defaultSound];
// 4. update application icon badge number
objNotificationContent.badge = @([[UIApplication sharedApplication] applicationIconBadgeNumber] + 1);
// Deliver the notification in five seconds.
UNTimeIntervalNotificationTrigger *trigger = [UNTimeIntervalNotificationTrigger triggerWithTimeInterval:10.f repeats:NO];
UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:@“ten” content:objNotificationContent trigger:trigger];
// 3. schedule localNotification
UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
[center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error)
if (!error)
NSLog(@“Local Notification succeeded“);
else
NSLog(@“Local Notification failed“);
];
斯威夫特 3：
-
在
AppDelegate.swift 文件中使用import UserNotifications
Appdelegate 应符合UNUserNotificationCenterDelegate 协议
在didFinishLaunchingWithOptions 使用下面的代码
// Override point for customization after application launch.
let center = UNUserNotificationCenter.current()
center.requestAuthorization(options: [.alert, .sound]) (granted, error) in
// Enable or disable features based on authorization.
if error != nil
print("Request authorization failed!")
else
print("Request authorization succeeded!")
self.showAlert()
func showAlert()
let objAlert = UIAlertController(title: "Alert", message: "Request authorization succeeded", preferredStyle: UIAlertControllerStyle.alert)
objAlert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.default, handler: nil))
//self.presentViewController(objAlert, animated: true, completion: nil)
UIApplication.shared().keyWindow?.rootViewController?.present(objAlert, animated: true, completion: nil)
现在在任何视图控制器中创建一个按钮，并在 IBAction 中使用以下代码：
let content = UNMutableNotificationContent()
content.title = NSString.localizedUserNotificationString(forKey: "Hello!", arguments: nil)
content.body = NSString.localizedUserNotificationString(forKey: "Hello_message_body", arguments: nil)
content.sound = UNNotificationSound.default()
content.categoryIdentifier = "notify-test"
let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: 5, repeats: false)
let request = UNNotificationRequest.init(identifier: "notify-test", content: content, trigger: trigger)
let center = UNUserNotificationCenter.current()
center.add(request)
【讨论】：
我是否需要在按下按钮时运行 funcButtonIsPressed？如果我希望应用程序默认每周发出通知，我应该将其添加到初始 VC 的 viewDidLoad 中吗？ 另外，为什么你的 AppDelegate.swift 文件有两次 didFinishLaunchingWithOptions？ "import UserNotifications" 在你的 ViewController 中导入这个 很好的例子。请注意，AppDelegate 没有必要遵守UNUserNotificationCenterDelegate，除非您希望它执行一些通知逻辑。此外，根据需要，可以在应用委托之外完成请求授权或发送本地通知。【参考方案2】：
在 appdelegate.m 文件中，在 applicationDidEnterBackground 中写入以下代码以获取本地通知
- (void)applicationDidEnterBackground:(UIApplication *)application
UILocalNotification *notification = [[UILocalNotification alloc]init];
notification.repeatInterval = NSDayCalendarUnit;
[notification setAlertBody:@"Hello world"];
[notification setFireDate:[NSDate dateWithTimeIntervalSinceNow:1]];
[notification setTimeZone:[NSTimeZone defaultTimeZone]];
[application setScheduledLocalNotifications:[NSArray arrayWithObject:notification]];
【讨论】：
当您使用 setScheduledLocalNotifications 只安排一个通知时：是不必要的。有一个带有一个参数的 scheduleLocalNotification 方法 - 要安排的通知。 developer.apple.com/library/ios/DOCUMENTATION/UIKit/Reference/…:【参考方案3】：创建本地通知非常简单。只需按照以下步骤操作。
在 viewDidLoad() 函数中，请求用户允许您的应用显示通知。为此，我们可以使用以下代码。
UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge], completionHandler: didAllow, error in
)
然后你可以创建一个按钮，然后在action函数中你可以编写如下代码来显示一个通知。
//creating the notification content
let content = UNMutableNotificationContent()
//adding title, subtitle, body and badge
content.title = "Hey this is Simplified iOS"
content.subtitle = "iOS Development is fun"
content.body = "We are learning about iOS Local Notification"
content.badge = 1
//getting the notification trigger
//it will be called after 5 seconds
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 5, repeats: false)
//getting the notification request
let request = UNNotificationRequest(identifier: "SimplifiedIOSNotification", content: content, trigger: trigger)
//adding the notification to notification center
UNUserNotificationCenter.current().add(request, withCompletionHandler: nil)
会显示通知，点击通知按钮后点击主页按钮。当应用程序处于前台时，不会显示通知。但是，如果您使用的是 iPhone X。即使应用程序在前台，您也可以显示通知。为此，您只需添加一个名为 UNUserNotificationCenterDelegate
的委托有关更多详细信息，请访问此博客文章：iOS Local Notification Tutorial
【讨论】：
【参考方案4】：使用 Swift 5 更新 通常我们使用三种类型的本地通知
-
简单的本地通知
带有操作的本地通知
带有内容的本地通知
您可以在其中发送简单的文本通知或操作按钮和附件。
在您的应用中使用 UserNotifications 包，以下示例 请求通知权限，根据用户操作 AppDelegate 本身准备和发送通知，并使用视图控制器列出不同类型的本地通知测试。
AppDelegate
import UIKit
import UserNotifications
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate
let notificationCenter = UNUserNotificationCenter.current()
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool
//Confirm Delegete and request for permission
notificationCenter.delegate = self
let options: UNAuthorizationOptions = [.alert, .sound, .badge]
notificationCenter.requestAuthorization(options: options)
(didAllow, error) in
if !didAllow
print("User has declined notifications")
return true
func applicationWillResignActive(_ application: UIApplication)
func applicationDidEnterBackground(_ application: UIApplication)
func applicationWillEnterForeground(_ application: UIApplication)
func applicationWillTerminate(_ application: UIApplication)
func applicationDidBecomeActive(_ application: UIApplication)
UIApplication.shared.applicationIconBadgeNumber = 0
//MARK: Local Notification Methods Starts here
//Prepare New Notificaion with deatils and trigger
func scheduleNotification(notificationType: String)
//Compose New Notificaion
let content = UNMutableNotificationContent()
let categoryIdentifire = "Delete Notification Type"
content.sound = UNNotificationSound.default
content.body = "This is example how to send " + notificationType
content.badge = 1
content.categoryIdentifier = categoryIdentifire
//Add attachment for Notification with more content
if (notificationType == "Local Notification with Content")
let imageName = "Apple"
guard let imageURL = Bundle.main.url(forResource: imageName, withExtension: "png") else return
let attachment = try! UNNotificationAttachment(identifier: imageName, url: imageURL, options: .none)
content.attachments = [attachment]
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 5, repeats: false)
let identifier = "Local Notification"
let request = UNNotificationRequest(identifier: identifier, content: content, trigger: trigger)
notificationCenter.add(request) (error) in
if let error = error
print("Error \(error.localizedDescription)")
//Add Action button the Notification
if (notificationType == "Local Notification with Action")
let snoozeAction = UNNotificationAction(identifier: "Snooze", title: "Snooze", options: [])
let deleteAction = UNNotificationAction(identifier: "DeleteAction", title: "Delete", options: [.destructive])
let category = UNNotificationCategory(identifier: categoryIdentifire,
actions: [snoozeAction, deleteAction],
intentIdentifiers: [],
options: [])
notificationCenter.setNotificationCategories([category])
//Handle Notification Center Delegate methods
func userNotificationCenter(_ center: UNUserNotificationCenter,
willPresent notification: UNNotification,
withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void)
completionHandler([.alert, .sound])
func userNotificationCenter(_ center: UNUserNotificationCenter,
didReceive response: UNNotificationResponse,
withCompletionHandler completionHandler: @escaping () -> Void)
if response.notification.request.identifier == "Local Notification"
print("Handling notifications with the Local Notification Identifier")
completionHandler()
和ViewController
import UIKit
class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource
var appDelegate = UIApplication.shared.delegate as? AppDelegate
let notifications = ["Simple Local Notification",
"Local Notification with Action",
"Local Notification with Content",]
override func viewDidLoad()
super.viewDidLoad()
// MARK: - Table view data source
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
return notifications.count
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
cell.textLabel?.text = notifications[indexPath.row]
return cell
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
let notificationType = notifications[indexPath.row]
let alert = UIAlertController(title: "",
message: "After 5 seconds " + notificationType + " will appear",
preferredStyle: .alert)
let okAction = UIAlertAction(title: "Okay, I will wait", style: .default) (action) in
self.appDelegate?.scheduleNotification(notificationType: notificationType)
alert.addAction(okAction)
present(alert, animated: true, completion: nil)
【讨论】：
令人印象深刻！好教程【参考方案5】：- (void)applicationDidEnterBackground:(UIApplication *)application
UILocalNotification *notification = [[UILocalNotification alloc]init];
notification.repeatInterval = NSDayCalendarUnit;
[notification setAlertBody:@"Hello world"];
[notification setFireDate:[NSDate dateWithTimeIntervalSinceNow:1]];
[notification setTimeZone:[NSTimeZone defaultTimeZone]];
[application setScheduledLocalNotifications:[NSArray arrayWithObject:notification]];
这是可行的，但在 iOS 8.0 及更高版本中，您的应用程序必须使用 -[UIApplication registerUserNotificationSettings:] 注册用户通知，然后才能安排和呈现 UILocalNotifications，不要忘记这一点。
【讨论】：
-[UIApplication registerUserNotificationSettings:] 将覆盖推送通知设置。所以如果使用推送可操作通知请小心。【参考方案6】：iOS 8 及以上用户，请在 App delegate 中包含此功能以使其正常工作。
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)])
[application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
return YES;
然后添加这行代码会有所帮助，
- (void)applicationDidEnterBackground:(UIApplication *)application
UILocalNotification *notification = [[UILocalNotification alloc]init];
notification.repeatInterval = NSDayCalendarUnit;
[notification setAlertBody:@"Hello world"];
[notification setFireDate:[NSDate dateWithTimeIntervalSinceNow:1]];
[notification setTimeZone:[NSTimeZone defaultTimeZone]];
[application setScheduledLocalNotifications:[NSArray arrayWithObject:notification]];
【讨论】：
【参考方案7】：-(void)kundanselect
NSMutableArray *allControllers = [[NSMutableArray alloc] initWithArray:self.navigationController.viewControllers];
NSArray *allControllersCopy = [allControllers copy];
if ([[allControllersCopy lastObject] isKindOfClass: [kundanViewController class]])
[[NSNotificationCenter defaultCenter]postNotificationName:@"kundanViewControllerHide"object:nil userInfo:nil];
else
[[NSUserDefaults standardUserDefaults] setInteger:4 forKey:@"selected"];
[self performSegueWithIdentifier:@"kundansegue" sender:self];
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(ApparelsViewControllerHide) name:@"ApparelsViewControllerHide" object:nil];
【讨论】：
【参考方案8】：我假设您已请求授权并注册您的应用以获取通知。
这是创建本地通知的代码
@available(iOS 10.0, *)
func send_Noti()
//Create content for your notification
let content = UNMutableNotificationContent()
content.title = "Test"
content.body = "This is to test triggering of notification"
//Use it to define trigger condition
var date = DateComponents()
date.calendar = Calendar.current
date.weekday = 5 //5 means Friday
date.hour = 14 //Hour of the day
date.minute = 10 //Minute at which it should be sent
let trigger = UNCalendarNotificationTrigger(dateMatching: date, repeats: true)
let uuid = UUID().uuidString
let req = UNNotificationRequest(identifier: uuid, content: content, trigger: trigger)
let notificationCenter = UNUserNotificationCenter.current()
notificationCenter.add(req) (error) in
print(error)
【讨论】：
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